The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied comment content from being passed to WordPress's shortcode engine, allowing any visitor to have arbitrary shortcodes registered on the site executed server-side and rendered to every subsequent visitor of the page.

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Fixes

Solution

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Workaround

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History

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-74
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 09 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
Description The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied comment content from being passed to WordPress's shortcode engine, allowing any visitor to have arbitrary shortcodes registered on the site executed server-side and rendered to every subsequent visitor of the page.
Title Spam protection, Honeypot, Anti-Spam by CleanTalk < 6.87 - Unauthenticated Arbitrary Shortcode Execution via Comment Text
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-09T15:23:18.450Z

Reserved: 2026-08-14T09:43:54.757Z

Link: CVE-2026-19855

cve-icon Vulnrichment

Updated: 2026-09-09T15:21:52.853Z

cve-icon NVD

Status : Deferred

Published: 2026-09-09T07:16:56.500

Modified: 2026-09-09T16:17:02.250

Link: CVE-2026-19855

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T10:30:09Z

Weaknesses